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RFID stickers with a 125 kHz TK4100 chip
(Product ID: 1684)

RFID systems operating on a frequency 125 kHz are still very widespread mainly for opening doors in apartment buildings, for recording of working time, and many other applications. These applications use a pre-encoded ID number on read-only 125 kHz chips for authentication.

There are multiple 125 kHz chips which work the same way and one of them is the TK4100, which is known as an inexpensive but reliable chip.

An RFID sticker with a 125 kHz chip TK4100 is thin, waterproof, with a diameter of 38 mm, and offers the possibility to use your RFID key under the mobile phone cover or it can be even glued to another card.

To use a sticker with your existing system, you have to enroll the sticker ID into your system and that is it.

You are welcome to buy white RFID stickers from stock or send us an inquiry for customized stickers with your logo, serial number, or other elements. Depending on the quantity and deadline, we will help you select the best option.
Price/item: 0,69 EUR (with vat 0,84 EUR)
Status: In stock
Dispatching time: 1-3 days


Product ID: 1684


69,00 EUR

Total with vat:
84,18 EUR
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Do you need print or other specific requirements?
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Quantity Price/pcs
≥ 1 1,25 EUR
≥ 10 0,95 EUR
≥ 25 0,83 EUR
≥ 50 0,75 EUR
≥ 100 0,69 EUR
≥ 200 0,65 EUR
≥ 300 0,63 EUR
≥ 500 0,59 EUR
≥ 1000 0,56 EUR
≥ 2000 0,53 EUR


RFID stickers with a 125 kHz TK4100 chip are a special kind of RFID transponder with a plastic layer on top and an adhesive layer on the bottom side. 

They contain a standard RFID chip and a copper antenna. The TK4100 chip is a read-only chip operating at a frequency 125 kHz, and it is used in countless applications for people, assets, and even animal identification purposes.

These RFID stickers are made from PVC, they have a diameter of 38 mm, and are approximately 1 mm thick. They are bright white, without numeration or other printed elements.

You are welcome to buy white RFID stickers from stock or send us an inquiry for customized stickers. Depending on the quantity and deadline, we can offer you several options for customization. We can print your logo or serial number, we can use some other material like paper for a top layer instead of PVC, we can modify the sticker size, shape, etc.

The key element of the 125 kHz RFID sticker is the copper antenna and a TK4100 chip, and if you need just this element you can buy it at: https://rfidspecialist.eu/store/rfid-tag-cob-with-125-khz-chip.html 

Reading test for RFID sticker with a 125 kHz chip TK4100

We tested these stickers with different kinds of readers and measured the reading distances. This is not an official test but it was made to inform you what reading distances you may expect with your application.
RFID Reader Reading distance
Syris RD200-LF 4 cm
R80D 3 cm
Promag PCR 330A 2 cm

The reading distance between the RFID transponder and the reader is affected by many different factors, like the size of the antennas and quality of the chips, the interferences of metal, and electromagnetic signals, etc.

Technical specification for RFID stickers with a 125 kHz TK4100 chip

Chip: TK4100
Compatible with: EM4100, EM4102, EM4200
Frequency: 125 kHz
Reading distance: up to 9 cm (depending on reader)
Sticker diameter: 38 mm
Thickness: 0.84 mm
Material: PVC
Printing options: custom made 125 kHz stickers are available upon request 

If you need larger quantities or printed 125 kHz stickers, please send us an inquiry with your specification.

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